Ham radio for people with disabilities. A weekly podcast from the Courage Handiham System, http://handiham.org.
Ham radio topics, including accessible equipment, blind ham radio, events, policy in the Amateur Radio Service, more.

Wednesday, August 29, 2012

Welcome to Handiham World.

New Tech Net Begins Next Week!

It isn't every day that we launch a new net. The official start date is on Thursday, 6 September 2012. The net will meet at 7:00 PM each Thursday United States Central Time and will remain true to local time throughout the year.
Here are some key things to remember about the new Tech Net:

It is perfectly okay to simply listen to learn. You are participating just by listening.

You should check in if you have a comment or question related to a technical topic. (Checking in to get on a net roster is not part of this net.)

When it is clear that a particular topic is under discussion and the discussion is not finished, please do feel free to add to the discussion if you have additional information on that topic. If you have some other technical question not related to the topic at hand, please wait until the current topic has been discussed and it is time to move on.

The net will be moderated and the discussion facilitated by the Net Control Station (NCS).

The Handiham Tech Net will meet each Thursday evening at 7:00 PM USA Central Time and last around an hour.

Handiham remote base station report

Thanks to Jose, KK4JZX, we are making some great progress on some of the software issues that our users have been experiencing. One such issue is some pretty noticeable lag in the response of the software to user input. For example, I can press the space bar to toggle the transmit/receive and I have counted delays up to six seconds! Other times the response will be nearly instant, as it should be. This was found to be caused by the code in the software telling it to reference a website that was no longer available. While the software waited for a response from a website that was never going to answer, the delay appeared. Echolink users who regularly use public proxies are familiar with how the application is unresponsive when it is querying a proxy that either does not exist or is already in use. This is a similar deal, so we are working on a way to fix it.

HOSTS file Phone Home fix

Remote Base Update: After a couple of weeks of code analysis, a workaround was found by KK4JZX. It has been found that the W4MQ client wants to "Phone Home" for some reason and, thus, the workaround requires that Handiham remote base users implement the HOSTS file Phone Home fix. Once the Phone Home fix is implemented, the W4MQ client will function much faster for both sighted and non-sighted users. Reports are coming in and we are getting feedback indicating that the experience is a much more rewarding one. The delays encountered with the PTT function are gone and it is now much more responsive. Stay tuned for additional fixes that we plan to release as part of the Handiham remote Base client software bundle!

You may visit the remote base website to download the current installation files, which do not yet contain this fix.

W0EQO at Courage North is in service. W0ZSW is in service. Solar Activity Forecast: Solar activity is expected to be very low to low with a slight chance for moderate activity for the next three days (29-31 August).Geophysical Activity Forecast: The geomagnetic field is expected to be predominately quiet for days 1-3 (29-31 August).
Credit: NOAA Space Weather Prediction Center
Please contact me directly at wa0tda@arrl.net if you have a remote base comment.

Wednesday, August 22, 2012

Welcome to Handiham World.

New Tech Net Offers a Chance to Get Questions Answered

We all run into technical problems with our amateur radio equipment, antennas, computers - you name it. Ham radio is a highly technical activity, so we all need resources to help us answer questions and figure out how to track down solutions. Of course there are on line forums for such things, but having an on the air "tech net" gives us a much more spontaneous and interactive way to participate in a group discussion that may well help us learn new things. The idea is for the Tech Net to facilitate discussions about technical topics. It is not a lecture series, nor is it a "check in for the count" kind of net. We welcome participants whether they simply want to tune in and listen or whether they want to transmit to ask or answer a technical question.
It isn't every day that we launch a new net. The official start date is on Thursday, 6 September 2012. The net will meet at 7:00 PM each Thursday United States Central Time and will remain true to local time throughout the year. To be sure we are clear about this, the net will meet at 7:00 PM Minnesota time summer and winter, regardless of the change between Standard Time and Daylight Time. This means that there will be a one hour shift relative to GMT each Autumn and again in the Spring. It is just easier to stick to the same indicated local time than to use a static GMT hour.
In the summertime, when the Tech Net is on the air at 7:00 PM (19:00 hours), the GMT hour will be 19:00 + 5, making the net time 24:00 (or 00:00) GMT. In the winter, when Minnesota goes to Standard Time, the difference between Minnesota time and GMT becomes + 6 hours. In that case, the net is heard at 0:100 hours GMT.
Please feel free to get on the HANDIHAM conference the next couple of Thursdays at what will be our official net time for pre-Tech Net anticipation discussions!
Here are some key things to remember about the new Tech Net:

It is perfectly okay to simply listen to learn. You are participating just by listening.

You should check in if you have a comment or question related to a technical topic. (Checking in to get on a net roster is not part of this net.)

When it is clear that a particular topic is under discussion and the discussion is not finished, please do feel free to add to the discussion if you have additional information on that topic. If you have some other technical question not related to the topic at hand, please wait until the current topic has been discussed and it is time to move on.

The net will be moderated and the discussion facilitated by the Net Control Station (NCS).

The Handiham Tech Net will meet each Thursday evening at 7:00 PM USA Central Time and last around an hour.

Wednesday, August 15, 2012

Welcome to Handiham World.

Changing times, changing Radio Camp

Radio Camp has been a core part of the Handiham program, but it has not always been the same over the years. How can it change with the times? How is ham radio changing?
For the two decades plus that I have worked for Courage Center, the Handiham Radio Camps have been changing, but they have always included licensing classes and have been around a week long. I think the shortest was five full days; most were seven or even eight if you counted the two halves of the travel days. We offered a California camp and a Minnesota camp each year. The last California session was in 2008, just as the Great Recession was peeking above the horizon. Little did we know at that time how devastating that recession would be and how it would cause us to pull back some of our services. California camp was an early casualty, but we have managed to keep the Minnesota camp intact. Now, with the June 2012 camp session behind us, we must consider what we can do to make Radio Camp successful in 2013.
Before I tell you my ideas, I'd like to take a look at some trends in ham radio and life in general, so bear with me. Remember that what constitutes a "trend" isn't always easy to define. Sometimes things change gradually over a long period of time - many years or decades, even centuries or millennia - while others change over a matter of months or a few years. It can be hard to tell when something is a short term trend or whether it is "permanent" for all practical purposes. Here are some trends that I have noticed:

It is harder than ever to get people to commit to club meetings and organized group activities.

The city parks and playgrounds are often nearly empty on a nice summer day.

There are many two meter amateur radio repeaters with almost no activity.

It seems as if every driver I see is talking on a cell phone.

Two things that are getting hard to find are cassette tapes and photographic film.

"LOL" has entered the vernacular.

There is a lot of gray hair at ham club meetings.

There is a lot of gray hair at lots of non-ham meetings.

Most of us throw stuff out rather than getting it fixed.

Social networks like Facebook are growing.

So what do I make of this and how does any of it relate to ham radio today and Radio Camp in particular?Community:
Consider this: Ham Radio is a social network, and it predates Facebook by nearly a hundred years. It has many of the elements that web-based social networks do, including making friends and communicating with them on a regular basis, sharing news and information about other interests, and building technology. The "Amateur's Code" was originally written by Paul M. Segal, W9EEA. in 1928. One of its main tenets is that the amateur is "BALANCED... Radio is a hobby never interfering with duties owed to his family, job, school or community." Even in the early days of Amateur radio, it was observed that one could go overboard and miss out on real life by becoming too engaged in radio. Perhaps this wisdom should be applied to the digital distractions that empty out the city parks and playgrounds, and drain away participation from civic engagement. People are really, really connected these days. They cannot even drive around the block without making a phone call. Children have cell phones, and they communicate through interactive features in video games.Computers:
Digital technology has married portability with computing. And NOTHING has escaped the long reach of the computer. It has gobbled up technologies like cassette tapes and photographic film and replaced them with digital audio and digital photography. It has transformed most areas of human endeavor. It has even changed our language to accommodate the compactness of texting. And with digital cellular service, all of this is available to nearly everyone near urban areas (which is most of us), at any hour of the day or night.Overload!
Yes, we are digitized and connected. We can stay in touch with our circle of friends without ever being in the same place.Is that good?
Well, yes, to a point. But the problem is that we are so connected that we get overloaded. No wonder we don't look forward to a club meeting or a night out to dinner with friends. No wonder the playground is empty when the kiddos are thumbing away at their video game controllers in the family room. And no wonder the age of amateur radio operators is on the rise - there is lots of competition for engagement by other social networks and our ever-connected culture. Other clubs - not just radio clubs - have also seen their average age go up and up as young people just don't engage as much as they once did in a pre-digital era.How has ham radio changed?
Ham radio is still a social network, but it is augmented by web-based social networks. Every ham radio operator on Facebook or Google Plus eventually uses these networks to discuss ham radio. Computing has transformed ham radio, with rig control, VoIP communications linking repeaters and computer users with smartphone users, and much more - too much to mention here. Digital technology has also made things cheap enough to replace rather than repair - and sometimes even to replace just because the new gear is magnitudes better, even though nothing is wrong with the old rig! All in all, while digital technology has been good to ham radio, it has sometimes been bad for ham radio in that it has buried everyone in constant connectivity that saps our will to participate in yet more communications. This gives us dead repeaters and sometimes poorly-attended meetings and events.What about Radio Camp?
Radio Camp is quite a commitment for the campers, who have to take a week of their time at sometimes considerable expense if a lot of travel is involved, to attend. The camp session is also expensive to host, considering the preparation and camp rental along with a laundry list of other costs. Volunteers also incur similar expenses. Clearly this is a high-stakes event, so we need to make sure we are understanding the trends here. Is increased ever-connectedness growing and here to stay? It seems so. Is digital technology here to stay, along with increasing miniaturization and consolidation of functions? That seems a solid long-term trend as well. Is the marriage between ham radio and computing going to last? I'd say yes to that one, too. As I type this, I'm listening to 2O12L special event station calling CQ. The signal is being received by the Handiham TS-590S radio, remotely controlled via the internet.Trending at Radio Camp...
So what seems to be trending at Radio Camp? For at least 10 years we have seen interest in the Operating Skills courses grow while in recent years it has become obvious that licensing courses are struggling. 2012 became a year without anyone attending camp to earn the Extra Class license. Operating Skills campers far outnumbered those who attended to study for a first license or upgrade. Let's summarize and speculate on two camp trends:

It is harder to attract campers who are interested in the licensing courses. We have to be careful here because we can't assume that our Handiham members are no longer interested in licensing and upgrades to higher licenses, but they are less interested in doing so at a camp session and more likely to do it by using the on line audio lectures we offer at Handiham.org.

There is growing interest in Operating Skills. This is at least a 10 to 15 year trend, and it may be driven by the new technologies and the desire to learn more about them as well as the need to simply meet other Handiham members in person and to have a week of fun. Camp has always been a place to meet old friends and make new ones, and our electronic connectivity can keep us connected after the camp session ends. Campers understand the balance between the real and the virtual and know that virtual cannot be a substitute for the real-life experience of attending camp in person. People are wanting to build real communities again!

A possible response:So what do we learn from these trends?
Let's put it this way: "The customer is always right", as the old saying goes. Smart businesses listen to their customers and give them more of what they want. And what our campers want is more ham radio fun and less studying for licenses. What I propose is this:

We continue to serve all of our Handiham members with our audio lectures for licensing or upgrades. Even those without computers can get our audio on Library of Congress digital player cartridges.

This frees us to build and expand Operating Skills in the camp sessions.

With more classrooms free because we don't offer licensing classes, we can get our op skills people into separate spaces in small groups that make it easier to use the radios or have a discussion.

Our instructors don't have to worry about cramming an entire licensing class into a week and can concentrate on teaching operating procedures.

We will have more time for traditional camp activities and the pontoon boat, plus field trips.

We can set up more stations so that people with different skill levels and interests can get on the air more without waiting so long for a seat at the operating position.

The Technician course would be replaced with a "Technician study group". This would be a way to include a small number of unlicensed Handiham members in the week of Radio Camp, but it would only be a study group, not a complete course. There would be no more "Go to camp and get your license in a week." Everyone there would have to be studying elsewhere prior to camp.

VE Session: Maybe we have one, maybe not. We will see how this idea develops, but dropping the VE session gives us more time on the last day of camp to do our regular activities. The low pass rates in recent years do show that our traditional model of licensing classes is not effective. It might be better to review at camp and send the Tech students home to finish their studies and take the exams from their local VE teams.

The emphasis will be on having fun through the week and being part of a community of friends. Learning can be fun, so we will learn about new things in Amateur Radio and learn how to be better radio operators.

Wednesday, August 08, 2012

Welcome to Handiham World.

What should you have to know to operate a club station?

Radio clubs usually do not have dedicated meeting space and extra room for a complete club station, but some do. Many clubs do have temporary "club stations" for the duration of club events or Field Day. What all of these club stations have in common is that they are shared resources that can be operated by many club members. For those amateur radio operators who cannot put up antennas at their homes, the club station is a great way to get on the HF bands or to have fun with VHF weak signal operation.
But here's the problem: The typical home station will be configured by the owner to be exactly what that operator wants. It will have the brand of radio equipment and the accessories preferred by that person, and everything will be laid out in a customized fashion. The club station will be used by many different operators. It may have different equipment than what you are used to, and be configured differently. With all of these different operators, each with different station layouts at home, the club station presents a learning challenge!
Let's consider some basic skills that might be expected of each club station user. These might be part of a "check ride", similar to that given to a licensed pilot when being checked out in an airplane for the first time. Although a person may hold a pilot's license, it is by no means certain that the pilot knows everything about every airplane! The same is true about licensed amateur radio operators and radios. To begin this discussion, I have identified six basic knowledge areas, but you may be able to think of some others:

License and identification: To operate an amateur radio station, you need a license, so a new user should expect to present his or her license along with some supporting identification (if requested) so that the club's station manager can determine if the licensee is current and what the operating privileges might be.

Safety and convenience: Since the club station will be unfamiliar territory to the new user, it is important to go over basic safety topics. These include the emergency power shut off, the location of fire extinguishers and other emergency equipment such as an AED, the location of exits, a telephone, and restrooms, and how to call for emergency help.

Ergonomics, accessories, and policies: This topic area covers your comfort and safety while operating the station. It will cover how to switch the lighting on and off, where writing materials, a frequency chart, and other commonly used desktop materials are found, seating adjustments, station layout, the ham shack computer (if there is one), and policies related to the use of the station. For example, a policy might include switching the equipment on and off in a certain sequence, no beverages on the operating desk, returning antennas and extendible towers to their nested positions at the end of a session, logging all contacts, using the club callsign, and so on.

Radio orientation and operation: This will show the new operator what each piece of equipment does and how it operates. It will include all the basics, such as the power switch, tuning, modes, antenna switching and rotor control and use of various accessories such as amplifiers.

Record-keeping: There may be a sign in/out sheet for users of the station. If logging of contacts is done, there may be a need to explain the procedure, whether it is by computer or in a paper logbook. There may also be a QSL policy and procedure. If a piece of equipment is not working or if a part is broken or missing there is usually a place to make note of it so that the club can remedy the problem.

Securing at shutdown: After the operating session, the station must be shut down and secured. In some cases, this may include disconnecting the equipment from the power mains and antennas to prevent lightning damage. It is also considered good practice to leave the radio in a more or less "normal" mode of operation, so that the next user will not sit down to a radio that has been left in split frequency mode with the RF gain at zero and every button pressed and knob twisted! If desk accessories are used during the operating session, they should be returned to wherever they were stored so that the operating desk is clear of clutter. The lights should be turned off and the room should be secured in whatever way is described by club policy.

A club station is an excellent resource for all club members, but because it is shared among many users it is wise to have some clear rules about its use and to include an orientation ("check ride") for each new user.
Email me at handiham@couragecenter.org with your questions & comments.
Patrick Tice, WA0TDA
Handiham Manager

Wednesday, August 01, 2012

Welcome to Handiham World.

Troubleshooting 101

Last week's problem showed up when I was using my shack's two meter rig, which is powered by a switching power supply. Let's just recap: It's the one that's typically used for the Handiham net each day. I'm located some distance from the N0BVE repeater system. (It's in the western part of the Twin Cities Metro while I am in the east.) That means my reception of the N0BVE signal is not exactly perfect. I can hear an annoying hiss in the background when the repeater is active, but that's easily eliminated with a flip of the switch on my external ClearSpeech speaker. This handy device has almost magical properties - really a very smart algorithm - that digitally cleans up the signal, virtually eliminating the noise. I don't like to leave it turned on all the time because I also enjoy listening to Minnesota Public Radio with the extended receive feature of the transceiver, and MPR has enough signal to be rock-solid perfect. It sounds best with the external ClearSpeech speaker's processing turned off.
One day I encountered an interesting problem. I had been listening to MPR when I last used the radio, and when I turned it on, that's the station I heard. Since I wanted to monitor the repeater instead, I flipped the memory to the stored two meter channel. Then, noticing that the ClearSpeech speaker was turned off, I slid its power switch to "on". At that very moment, the radio went dead - no power. I pushed the power button on the radio and everything was back to normal. I put up with this for weeks before finally getting the gumption to track it down.
The challenge was to guess what was going on. Rick, W0IS, was right on the money when he wrote:My educated guess is that the negative power lead for the speaker had gotten disconnected, but it still got power because it was grounded through the radio, either through the speaker connection, or just from the two chassis touching somewhere. But my guess is that the radio's negative power lead does not go directly to the chassis of the radio. There is some electronics between the black power wire and the chassis, and this electronics did not like the current running through it. I don't remember the details, but I had something similar happen with my FT-817 (or maybe it was a different rig). The black wire came loose, but it was still connected to the negative side of the power supply through the chassis. It worked, but there were some flukes, since the black wire did not go directly to the rig's chassis. Did I guess right? 73, Rick W0IS
Yes, and it turned out that the fault was in the ground side of one of those popular snap-together connectors in common use today. The connector was probably not properly installed in the first place, or else the spring tension inside was just so weak as to allow the ground side to lose contact if the connector was bumped or the power supply cable got moved in just the wrong way. It's worth noting that had the powered speaker had a grounded metal cabinet with a common grounding lug and had both the radio and the speaker been grounded to a common station ground, this problem would likely not have even shown up. As it was, the ground had been completed through the speaker's 3.5 mm audio plug's grounded side to the radio. Obviously this is not the ideal way to power things! In any case, the fix was as simple as it could be - just repairing the power supply DC cabling fixed the problem.
Station grounding is important, though. Grounding equipment to a common station ground can help eliminate RF circulating in places where it shouldn't be as well as protecting equipment from static discharges and keeping the gear at the same potential to avoid electrical shock hazards.
Email me at handiham@couragecenter.org with your questions & comments.
Patrick Tice, WA0TDA
Handiham Manager